Scale



J. A. DAHNE.

, SCALE.

APPLICATION FILED MAR 14,1919. 1,345,587, Patented July 6, 1920.

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SCALE.

APPLICATION FILED MAR. 14. I9l9.

Patented July 6, 1920.

2 SHEETS-SHEET Z mm a? 1 w/waf x (Mam I TED] STATES PATENT 1 OFFICE.

J LIUS A. DAHNE, or STILLWATER, MINNEso'rA,

{j 1 SCALE,

* use the same. 1 c

My invention relates to improvements in computing"weighingscales, and has for its object to provide means for indicating a pre determined weight in 'advanceof theweighing action of the scale, together-with signals "arranged to be successively and automati- Cally operated to indicate under weight, correct weight and" over weight, under the weighing action of the scales, and in respect to saidweightindicatingmeans: ,7

7 To theabove end,the invention consists of-the novel devicesand combinations ofdevices" hereinafter described and defined in the claims I c In the; accompanying; drawings," wh1ch illustrate the invention, like characters indicate like partsthroughout the several views. Referringito the drawings, j

Figure 1 is aaview'in frontelevation of a" computing weighmg scale, with some parts removed, and'ha'ving the invention incorporated therein, said; view also diagram'mati' cally illustrating the electric circuit for the visual indicators; i U 1 Fig.2 is also front elevationof said scale with" some parts broken away and having some parts set in different positions from those shown in Fig.1; j r Fig. 7 3 is a view principally in central vertical section with some parts broken away; Fig. 4 is a fragmentary detail view,-on an enlarged scale; and a Fig. --5J isfa detail view With some; parts shown in a horizontal section in thevicinity of thexbjearings for the hand,

Of the standard parts of the computing scale illustrated, it is important to note the: base 6, scoop '7 supported by thebeam 8, casing 9,;secured tothe base-6', combined weight] and 7 price indicating dial 10 suspended from the top; of thecasing 9, rock shaft 11 having knifeedged;bearingsiengageable with a bracket12 supported from the back of the casing 9,;depending stem 1 13 rigidly secured to the shaft 11 and carryp Y SpecificationptLetterslifatent, Ap'iilication'filed March 14, 1919. Serial No. 282,616;

. Patented ing a 'pendulum-acting weight 14, an upwardly projecting segment 15 integrally formed with the shaft 11 and inclined in, the direction of the movement of the at-' July 6,1920,

tached hand of the scale under'the weigh-c ing action thereof,- and a strap 16 anchoredat its upper end to the uppermostjportion of the segment 15 and attached at it's lower end to thebeam 8 with itsintermediate portion extendin over the-periphery of said seg-' lso 1n'tegrally formed with thement. shaft'11,'is a short arm-17 in diverging re lation to the segment "1'5. This arm 17 customarily carries a combined weight and price indicating handarranged to move' over the face of the dial 10, under the weighing action of the scale.

In place of, the customary combined weight and price indicating hand, I secure to the farm 17 a-weig-ht-indicating arm 18 arranged to move over the back of the dial 10 on'which will be marked weight-indicatit is not necessary to illustrate, as they correspond to the weight graduations on the front ofthe dial 10, may be plainly seen by a cus tomer througha sight opening19in the back ofthecasing 9. To permita clerk oroth'er person to watch the movement of the hand 18 from the front of the'scale, the free end portion thereof is bent laterally and ex- 'ing graduations. These graduations, which 7 tended through a; segmental slot 20 in the dial 10 and provided with a" depending pointer 21 arranged to move over therweightindicating graduations on the face of said dial;

Rigidly secured to the bracket 13, plate'22. which, in turn, has rigidlysecured thereto a fixed stud 23*which projects horizontally through an aperture: in the'face of thecasing 79. Loosely mounted on the stud 23, is a sleeve 25% which alsoproj ects through the aperture in theface of the casing 9 and hasfixed on its outer end a thumb wheel or 'knob 25, byiwhich said sleeve may be turned.

on the studt23. ,Integrally formed with the inner end of the sleeve-24, is a concentric annular; flange 26 from, ;which 7 upwardly projects two radial arms 27 and 28.

A combined weight and price indicating is a hand29 is rigidly secured to the arm 27 and I frictionally held in different set positions by ajsc'rew 30 secured to the casing 9 and yieldingly pressing agamstjthe flange 26.1

Obviously, by turning th k ob hand 29 may be manually set in different adjustments, in respect to the dial 10, to indicate a predetermined weight 01 a load to be weighed on the scale in advance of the weighing action of the scale.

Automatically operated signals, as shown, visual indicators are provided for indicating whether the load on the scale is over, correct, or under weight, in respect to the predetermined weight as indicated by the hand 29. As shown, these indicators are in the form of three electric light bulbs 31, and 33, preferably colored red, white and blue, respectively. These bulbs 31, 32 and 33, as shown are mounted on the top of the casing 9 and arranged from the left to the right,-respectively. In actual construction, a cover or housing, not shown, will be provided for the white bulb 32 and arranged to cause said bulb to flood the face of the scale when said white bulb is lighted. A battery 34 is provided as a source of electrical energy for the bulbs 31, and 33 and connected to said battery are wires 35 and 36. Branch wires 37' electrically connect the bulbs 31, 32 and 33 to the wire 35, and the wire 36 is electrically connected to a small bracket 38 secured to the segment 15 and insulated therefrom.

Carried by the bracket 38, is a movable contact 39 in the form of a small roller ournaled on an arm 10 pivoted to said bracket. This contact 39 gravity rests on the periphery of a segment 11 of suitable insulating material and carried by the arms 27 and 28. Set into the periphery of the segment ll and circumferentially spaced with respect to each other, are three fixed contacts 42, 4:3 and 44 arranged from the left to the right respectively. The contacts 42 and 13 are relatively short and the contact 414- is relatively long, as best shown in Fig. a. A wire 15 electrically connects the red bulb 31 to the contact 42, a wire 46 electrically connects the white bulb 32 to the contact F 43 and a wire 47 electrically connects blue bulb 33 to the contact 14;. It may be here stated that the red bulb 31, when lighted indicates under weight, the white bulb 32, when lighted, indicates correct weight, and the blue bulb 33, when lighted indicates over weight.

Normally both of the hands 18 and 29 are in their extreme leftshand positions and at zero, with respect to the dial, as shown in Fig. 1. The electric circuit is normally broken by the movable contact 39 which rests on the insulating segment 41 at the left of the contacts 42, 43 and 44. lVhen the improved scales are to be used, the hand 29 is manually moved by turning the knob 25 to set said hand, in respect to the dial 10, to indicate the predetermined weight. As shown in Fig. 2, the hand 29 is set to indicate a weight slightly over twelve ounces. This movement of the hand 29, in respect to the dial 10, carries the fixed contacts 42, 43 and 14 a proportional distance from the movable contact 39, when the hand 18 is at zero, rela tive to the predetermined weight indicated by the hand 29.

Materials to be weighed are poured or placed in scale scoop 7, and, under the ac tion of the beam 8 on the strap connection 16 to the segment 15 the shaft 11, is rocked on its knife-edge bearings and thereby draws the movable contact 39, carried by said seg ment to the right over the periphery of the segment 411. Under the increasing load placed on the scales, the contact 39 first comes into engagement with the contact 42, completes the electrical circuit through the red bulb 31, and lights the same, which in dicates under weight. By further increasin the load on the scale, the contact 39 moves out of engagement with the contact 12 and into engagement with the contact 13, thereby breaking the circuit to the red bulb and completing the circuit to the white bulb 32, indicating correct weight. If too much of a load is placed. on the scales, the contact 39 will move out of engagement with the contact 43 and into engagement with the contact 14:, thus breaking the circuit to the white bulb 32 and completing the circuit to the blue bulb 33, indicating over weight. It will then, of course, be necessary to remove a portion of the load to cause the contact 39 to move out of engagement with the contact 44 and into engagement with the contact 13, thus breaking the circuit to the blue bulb 33 and completing the circuit to the white bulb 32, which again indicates correct weight. As long as there is an overweight on the scales the circuit to the blue bulb will remain complete.

By the use of the automatically controlled visual indicators a customer may watch the scale from a distant point to see whether or not he is given the correct weight. Also the proprietor or manager of a store may readily'see whether or not his clerks are giving correct weight. The tendency of clerks, either from carelessness or when in a hurry, is to give over weight, which of course, often means the difference between success and failure.

l/Vhat I claim is:

1. The combination with a weighing scale having a dial, of a hand cooperating with the dial and arranged to be set in different weight indicating adjustments in advance of the weighing action of the scale, a plurality of visual weight indicators, and automatic means for including said hand for successively operating said indicators under the weighing action of the scale and in respect to the weight indicated by said hand.

2. The combination with a weighing scale having a dial, of a hand cooperating with the dial and arranged to be set in different weight indicating adjustments in advance of the weighing action of the scale, three visual indicators representing under weight,

correctweight, and overweight in respect to the weight indicated by said hand, and automatic means including said hand for successively operating said indicators under the weighing action of the scale 3. The combination with a. Weighing scale having a dial, of a hand cooperating with the dial and arranged to be set in different weight indicating adjustments in advance of the weighing action of the scale, three electric light bulbs representing under weight, correct weight, and over weight, in

respect to the weight indicated by said hand,

, said contacts for successively lighting said bulbs under the weighing action of the scale and in respect to the weight indicated by saidhand. In testimony whereof affix my signature in presence of two witnesses.

JULIUS A. DAHNE.

l/Vitnesses W. G. CovY, ARTHUR JAMISON. 

